Milling-machine



(No Model.)

A'. J. LANGELIER.

MILLING MACHINE.

Patented Sept. 15, 1896.

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UNIT D STATES ATENT OFFICE.

ANTOINE J. LANGELIER, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO DAVIDHUNT, OF BOSTON, MASSACHUSETTS.

MILLING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 567,952, datedSeptember 15, 1896. Application filed November 18, 1895 Serial No.569,373. No model.)

To all whom it may concern:

Be it known that I, ANTOINE J. LANGELIER, a citizen of the UnitedStates, residing at Providence, in the State of Rhode Island, haveinvented a new and useful Improvement in lVlilling-lVIachines, of whichthe following is a specification.

My invention relates to a milling-machine adapted for special work; andit consists in improved devices for holding the article operated uponwhile its surface is being milled, as hereinafter fully set forth.

In the accompanying drawings, Figure 1' represents afront elevation ofthe parts of the machine. Fig. 2 represents a side elevation and axialsection of the same. Fig. 3 represents a detail axial section showingthe cutting-tools in operation. Fig. 4 represents a transverse sectiontaken in the line 4 4 of Fig. 2. Fig. 5 represents an under view of thecutter-head. Fig. 6 represents an enlarged view, and Fig. 7 an edgeview, of the illustrative piece to be milled. Fig. 8 represents a detailsection taken in the line 8 8 of Fig. 5. Fig. 9 represents a side viewof one of the cutters.

In the drawings, A represents the upright frame of the machine, B theadjustable head, which carries the feeding-spindle, and C thefeeding-spindle, which is provided at its up per end with the holder D,which is adapted to form a rest for the piece E, which is to be operatedupon by the cutters, the upper end of the said holder being providedwith a slight recess a, which is adapted to receive and loosely embracethe cylindrical exterior of the piece E, the required up-and-downmovement of the feeding-spindle 0 being irnparted thereto by means ofthe gear F and rack G and the hand-arms H H.

Upon the revolving spindle I, which car ries the milling-tool b, issecured the pulley J, and upon the hollow bearing-sleeve K, which isclamped in the split bearing-arm c of the frame A, is placed the loosepulley L, the said pulley being retained in position upon thebearing-sleeve by means of the shoulder 01 upon the sleeve and thecorresponding shoulder a in the bore of the pulley.

The splitlower end of the spindle I is provided with a taperingscrew-thread f, upon which is placed the tightening-nut M, by means ofwhich the milling-tool b may be firmly held in its retaining-socket inthe spindie, and upon the cylindrical shank g of the tool b is placedthe sliding holding-sleeve N, which is provided at its lower end withsuitable spurs or projections h h for engaging with theupwardly-extending projections 7 2' of the piece E, which is to bemilled.

The bearing-sleeve K is provided internally with the longitudinalgrooves j j, which are adapted to receive the projecting splines It 70,secured in the opposite sides of the holding sleeve N, so as to preventthe said sleeve from turning, and in the annular chamber above theholding-sleeve N is placed the spiral spring 0, which serves to carrythe said sleeve downward, the downward movement of the sleeve beinglimited by the engagement of the shoulder Z with the shoulder m of thecutter-holder P.

The cutter-holder P is screwed onto the hub n of the loose pulley L, andis provided at its face with grooves 0 0, adapted to receive the cuttersp p, the said cutters being retained in position by means of theinclined set-screws q q and adjusted inwardly by means of the nut Q,provided with the annular beveled surface r, which engages with thecorrespondingly-beveled outer ends of the cutters.

The pulley J is to be driven by means of a belt which passes over theidler-pulleys J J,

and the loose pulley L is to be driven in the same direction by means ofa belt passing over the idler-pulleys L L.

In operating the machine one of the rough pieces E (shown in Figs. 6 and7) is to .be placed in the recess a, which loosely embraces the exteriorof the said piece, and then the said piece E is to be raised with thefeeding-' upon the continued upward movement of the feeding-spindle Othe rotating cutters p 17 Will operate to trim off the exteriorcylindrical surface s of the piece E, and at the completion of the saidupward movement the milling-tool Z) will operate to trim off thesurfaces 75 t of the said piece E as desired.

The form of the engaging end of the yielding device for holding thearticle to be milled is to be made to conform to the specialcharacteristics of the said article, and it is evident that either oneor more cutters may be employed in this connection.

By my improvement a holding-chuck for the article is dispensed With,whereby the ar ticles can be rapidly inserted into and taken from themachine, thus adapting the same for an automaticfeed; and the inventionis useful described.

ANTGINE J. LANGELIER.

\Vitnesses:

SOORATES ScHoLFIELD, JAMES B. ALLEN.

